|"I show not your face but your heart's desire."|
Mucus ad Nauseam Duo was the incantation of a curse that gave the recipient a very nasty cold and runny nose. It was a more powerful version of the Curse of the Bogies. The Duo variant of the Curse of the Bogies was also more effective than a single cast of Mucus ad Nauseam Tria.
Successive casts of Mucus ad Nauseam Duo on the same target would have no further effects. Casting Mucus ad Nauseam Tria on a target already affected by the Duo variant would intensify the target's cold, while casting Mucus ad Nauseam Uno on a target already affected by the Duo variant would reduce the effects of the cold.
- Harry Potter and the Philosopher's Stone (video game) (First appearance)
- Harry Potter and the Chamber of Secrets (video game)